Beam Balances

Q.

Write a difference between beam balance and physical balance?

Q.

How do you convert $105°$ Fahrenheit to Celsius?

Q.

Which of the following is/are example(s) of lever ?

1. Plank

2. Knife

3. Wheel

4. Nail-cutter

Q. A beam balance or a calibrated electronic balance is used to measure:

1. Time
2. Mass
3. Acceleration
4. Weight

Q.

The weight of an object can be measured by using an instrument called _____.

Q.

Why do we use electronic balance in shops and laboratories?

Q.

With the help of which following device the cold drink bottle can be easily opened ?

1. Nail-cutter

2. Knife

3. Cork opener

4. Scissor

Q. A weighing balance is an example of lever of first order.

1. True
2. False

Q. What physical quantity is measured using Beam balance?

1. Mass
2. Weight
3. Density
4. Volume

Q. While using a beam balance, if we do not turn the lever gently,

1. the lever will break
2. the knife edges will be chipped
3. the beam will break
4. nothing will happen

Q. The weights in a beam balance should not be carried with bare fingers

1. to avoid change in weight due to chemical reactions
2. to avoid change in weight due to moisture and dust
3. to avoid dropping of weights on the pan
4. just to make use of the forceps

Q. Give reasons as to why a physical balance is kept in a glass case in jewellery shops.

Q. The weights should be carried with forceps to :

1. avoid impressing fingerprints on the weights
2. avoid heat exchange
3. none of these
4. avoid the change in its weight due to the presence of moisture and dust particles

Q. Explain the working of a beam balance.

Q.

In a Roman steelyard, the weight of the Rider is 10 N and the scale is calibrated in mm. If the load is suspended 8 cm away from the point of suspension, then the least count of the instrument is _________. (Take g = 10 m s^-2)

1. 4 N

2. $\frac{1}{8}N$

3. 8 N

4. $\frac{1}{4}N$

Q. The weights should be tried in descending order, for a beam balance, when we are :

1. near the actual weight
2. making a rough estimation of the actual weight
3. measuring any weight as a constant practice
4. far from the actual weight

Q. When we are near to getting the actual weight in a beam balance, standard weights should be tried in :

1. increasing order
2. either increasing or decreasing order
3. at random
4. decreasing order

Q.

Which of the following is used for measuring the mass of costly substances such as gold, silver, diamonds?

1. Physical Balance

2. Beam Balance

3. Electronic or Digital balance

4. Compression balance

Q. The lever should be turned gently, in order to :

1. ensure that the motion is smooth and quiet
2. prevent the knife edges from chipping
3. avoid any jerk on the balance
4. none of these

Q. Which of the following should not be weighed directly in contact with a balance pan?

1. ceramics
2. laboratory chemicals
3. glass
4. metal objects

Q. Which of the following is not correct precaution taken while using beam balance?

1. When near the actual weight, the weights should always be tried in the descending order
2. The beam should be lowered each time before adding or removing weights from the pan
3. The weights should be replaced into the weight box after weighting
4. None

Q. Which of the following is a correct about precautions to be taken while using beam balance?

1. The weights should be carried with foreceps
2. They should not be carried with bare fingers to avoid the change in its weight due to the presence of moisture and dust particles
3. All of the above
4. Wet and hot objects should not be kept on the pan

Q.

Write a short note on beam balance?

Q. Wet objects should not be kept on the pan as :

1. the weight measured will be less than actual
2. the weight measured will be more than actual
3. the pan may break down
4. the weight measured will be same as actual

Q. The temperature of the objects placed on either pans of the beam balance should be :

1. different
2. same
3. room temperature
4. the respective freezing points

Q. State two conditions for a beam balance to be true.

Q. Which type of objects should not be kept on the pan?

1. Wet
2. Cold
3. Dry
4. Hot